Light guide material injection molding device, injection molding method and light guide plate

Abstract

The invention discloses a light guide material injection molding device and method and a light guide plate, and relates to the technical field of injection molding. The light guide material injection molding device comprises an injection molding table, a feeding assembly and a pressure relief assembly; the feeding assembly comprises a material conveying assembly arranged at the top end of the injection molding table, and a material supply assembly is arranged above the material conveying assembly; the pressure relief assembly comprises a supporting assembly arranged on one side of the conveying assembly and fixedly connected with the conveying assembly, and an adjusting assembly is fixedly connected to the bottom end of the supporting assembly. The material conveying assembly comprises a driving part, a rotating part and a screw rod part, the driving part is fixedly connected to the top end of the injection molding table, the driving part is fixedly connected with the rotating part, and the rotating part is fixedly connected with the screw rod part; the supporting assembly comprises an air bag part and an adsorption part, the air bag part is arranged at the bottom end of the adjusting assembly, the top end of the air bag part is fixedly connected with the adsorption part, materials can be evenly conveyed, rapid demolding can be achieved, and the injection molding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and particularly to a light guide material injection molding device, an injection molding method, and a light guide plate. Background Art

[0002] With the continuous development of industrial manufacturing technology, especially in the field of plastic molding, injection molding technology, as an efficient molding method, has been widely used in the production of various plastic products. In the production of light guide materials, especially in the molding process of high light transmittance materials such as PMMA (polymethyl methacrylate) and PC (polycarbonate), the injection molding process faces many technical problems.

[0003] First of all, due to the poor fluidity and easy deformation of the light guide material itself, the traditional feeding system cannot effectively ensure its uniform transportation, which not only affects the stability of the injection molding process, but also may lead to fluctuations in the quality of the molded parts. Secondly, due to the strong adhesion of the light guide material, there is often a large frictional force during the demolding process, resulting in difficult demolding and low production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a light guide material injection molding device, an injection molding method, and a light guide plate, which solve the problems of material transportation inability, difficult demolding, and reduced injection molding efficiency.

[0005] To achieve this purpose, the present invention adopts the following technical solutions: A light guide material injection molding device, an injection molding method, and a light guide plate, comprising: an injection molding table, a feeding assembly, and a pressure relief assembly; The feeding assembly includes a feeding component arranged at the top of the injection molding table, and a feeding supply component is arranged above the feeding component; The pressure relief assembly includes a support assembly fixedly connected to one side of the feeding component, and an adjustment component is fixedly connected to the bottom end of the support assembly; The feeding component includes: a driving part, a rotating part, and a screw part. The driving part is fixedly connected to the top of the injection molding table, the driving part is fixedly connected to the rotating part, and the rotating part is fixedly connected to the screw part; The support assembly includes: an airbag part and an adsorption part. The airbag part is arranged at the bottom end of the adjustment component, and the adsorption part is fixedly connected to the top end of the airbag part.

[0006] Preferably, the rotating part includes: a first gear, an internal gear, and a second gear. The driving part is used to drive the first gear to rotate. The first gear meshes with the internal gear, and a second gear corresponding to the first gear is meshed inside the internal gear.

[0007] Preferably, the screw part includes: a first screw and a second screw. One end of the first screw is fixedly connected to a first gear. A fixing plate is fixedly connected to the side of the first screw, and the side of the fixing plate is fixedly connected to the second screw. The first screw and the second screw are arranged in a barrel.

[0008] Preferably, the driving part includes: a driving motor and a rotating rod. The driving motor is fixedly connected to the top of the injection molding table. The output end of the driving motor is fixedly connected to the rotating rod, and the bottom end of the rotating rod is fixedly connected to the first gear.

[0009] Preferably, the airbag part includes: a first airbag and a second airbag. The first airbag is fixedly connected to the side of the adjusting component, and the second airbag is arranged on the side of the first airbag.

[0010] Preferably, the adsorption part includes: a vacuum chuck, an air suction pipe, an air cylinder and a piston rod. The vacuum chuck is fixedly connected to the bottom end of the adjusting component. One end of the vacuum chuck is fixedly connected to the air suction pipe, the end of the air suction pipe is fixedly connected to the air cylinder, and a piston rod is slidably connected inside the air cylinder.

[0011] Preferably, the feeding component includes: a hopper, a feeding box and a heating coil. The feeding box is fixedly connected to the top of the injection molding table. The top of the feeding box is fixedly connected to the hopper, and a heating coil is fixedly connected inside the hopper.

[0012] Preferably, the adjusting component includes: a telescopic cylinder and an injection mold. The telescopic cylinder is fixedly connected to one end of the injection molding table. The telescopic end of the telescopic cylinder is fixedly connected to an injection mold. A vacuum adsorption hole is opened at the bottom end of the injection mold, and the vacuum adsorption hole corresponds to the vacuum chuck.

[0013] Preferably, a method for injecting a light guide material uses the light guide material injection device as described above and includes: S1. Put the PMMA material with high light transmittance into the feeding component of the feeding assembly for heating and drying; S2. Start the driving part of the feeding assembly, and make it drive the screw part to rotate through the rotating part to feed and inject into the adjusting component; S3. At the same time, start the telescopic cylinder to make the telescopic cylinder push the injection mold to close for plastic molding; S4. After the light guide plate is injection molded, close the telescopic cylinder and retract it to drive the injection mold to open; S5. When the telescopic cylinder retracts, the telescopic cylinder drives the supporting component to drive the adsorption part to suck out the air in the injection mold and inject it into the airbag part; S6. The airbag part bulges to flexibly support the light guide plate to separate, and take out the light guide plate from the injection mold.

[0014] Preferably, a light guide plate made of a light guide material is injection molded by the light guide material injection molding device described above.

[0015] Compared with the prior art, the present invention has the following beneficial effects: During the injection molding process, first place the PMMA material with high light transmittance into the feeding component of the feeding assembly for heating and drying. Subsequently, manually start the driving part of the material conveying assembly, so that the driving part drives the screw part to rotate through the rotating part, thereby spirally conveying the dried PMMA material with high light transmittance in the feeding assembly into the adjusting assembly. At the same time, start the adjusting assembly, so that the material conveying assembly injects the PMMA material with high light transmittance inside into the adjusting assembly for injection molding. After injection molding, turn off the driving part, so that the driving part stops driving the screw part to convey materials spirally through the rotating part. At the same time, turn off the adjusting assembly, so that the adjusting assembly drives the adsorption part of the supporting assembly to suck out air at the bottom of the adjusting assembly and inject it into the airbag part to bulge, solving the problems of material transportation inability, difficult demolding, and reduced injection molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional schematic diagram of components such as the vacuum suction cup, suction pipe, and air cylinder of the present invention; Figure 3 It is Figure 2 The enlarged structure schematic diagram at A in Figure 4 It is Figure 2 The enlarged structure schematic diagram at B in Illustration: 1. Injection molding table; 2. Feeding assembly; 3. Pressure relief assembly; 210. Material conveying assembly; 2110. Driving part; 2111. Driving motor; 2112. Rotating rod; 2120, Rotating part; 2121, First gear; 2122, Internal gear; 2123, Second gear; 2130, Screw part; 2131, First screw; 2132, Second screw; 2133, Fixed plate; 2134, Barrel; 220, Feeding assembly; 221, Hopper; 222, Feeding box; 223, Heating coil; 310, Support assembly; 3110, Airbag part; 3111, First airbag; 3112, Second airbag; 3120, Adsorption part; 3121, Vacuum suction cup; 3122, Suction pipe; 3123, Air cylinder; 3124, Piston rod; 320, Adjustment assembly; 321, Telescopic cylinder; 322, Vacuum adsorption hole; 323, Injection mold. Detailed implementation mode

[0019] In order to make the invention purpose, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present at the same time.

[0021] The following further illustrates the technical solutions of the present invention in conjunction with the accompanying drawings and through specific implementation modes.

[0022] The light guide material injection molding device can efficiently and accurately form the light guide material into a light guide plate through the injection molding process, and has a wide range of applicable scenarios, especially suitable for optical products that require high-precision molding; the light guide material generally refers to a material with high optical transparency and used to guide light. Common light guide materials include polymethyl methacrylate (PMMA) and other transparent plastics. Due to their good optical properties, these materials are widely used in display screens, optical components, lighting systems, and other devices that require precise optical transmission.

[0023] Reference Figure 1 - Figure 4 As shown, an injection molding device for light guide materials, an injection molding method and a light guide plate according to an embodiment of the present invention include: an injection molding table 1, a feeding assembly 2 and a pressure relief assembly 3; The feeding assembly 2 includes a material conveying assembly 210 arranged at the top end of the injection molding table 1, and a material supply assembly 220 is arranged above the material conveying assembly 210; The pressure relief assembly 3 includes a support assembly 310 fixedly connected to one side of the material conveying assembly 210, and an adjustment assembly 320 is fixedly connected to the bottom end of the support assembly 310; The material conveying assembly 210 includes: a driving part 2110, a rotating part 2120 and a screw part 2130. The driving part 2110 is fixedly connected to the top end of the injection molding table 1, the driving part 2110 is fixedly connected to the rotating part 2120, and the rotating part 2120 is fixedly connected to the screw part 2130; The support assembly 310 includes: an airbag part 3110 and an adsorption part 3120. The airbag part 3110 is arranged at the bottom end of the adjustment assembly 320, and the adsorption part 3120 is fixedly connected to the top end of the airbag part 3110.

[0024] The feeding assembly 2 is used to convey the high light transmittance PMMA material inside to the pressure relief assembly; the pressure relief assembly 3 is used for flexible support and pressure relief; the material conveying assembly 210 is used to convey materials; the material supply assembly 220 is used to supply materials; the support assembly 310 is used to provide flexible support for the adjustment assembly 320; the adjustment assembly 320 is used for the injection molding of the light guide plate; Put the high light transmittance PMMA material into the material supply assembly 220 of the feeding assembly 2 for drying. The high light transmittance PMMA material refers to polymethyl methacrylate (PMMA) with very high optical transparency, which is commonly used in the application of plastic transparent materials and is widely used in fields such as optical products, display screens, lamps, and automotive parts. Then start the driving part 2110 of the material conveying assembly 210, so that the driving part 2110 drives the rotating part 2120 to rotate, and the rotating part 2120 drives the screw part 2130 to rotate and convey to the injection assembly. At the same time, start the adjustment assembly 320. Then the injection assembly injects the high light transmittance PMMA material into the adjustment assembly 320 for plastic molding. After plastic molding, turn off the driving part 2110 and the adjustment assembly 320, so that the driving part 2110 stops driving the screw part 2130 to rotate and convey materials through the rotating part 2120. At the same time, the adjustment assembly 320 drives the adsorption part 3120 of the support assembly 310 to move, so that the adsorption part 3120 adsorbs the air in the adjustment assembly 320 and injects it into the airbag, causing the airbag to bulge.

[0025] During the injection molding process, the PMMA material with high light transmittance is placed in the feeding component 220 of the feeding assembly 2 for drying. Subsequently, the driving part 2110 of the material conveying assembly 210 is started, so that the driving part 2110 drives the screw part 2130 to rotate and convey materials through the rotating part 2120. At the same time, the adjusting assembly 320 is started. Subsequently, the injection assembly injects the PMMA material with high light transmittance into the adjusting assembly 320 for mold forming. The driving part 2110 and the adjusting assembly 320 are closed, so that the driving part 2110 of the material conveying assembly 210 stops driving the screw part 2130 to rotate and convey materials through the rotating part 2120. At the same time, the adjusting assembly 320 adsorbs the air in the adjusting assembly 320 through the adsorption part 3120 of the support assembly 310 and injects it into the airbag, causing the airbag to bulge, solving the problems of material transportation inability and difficult demolding and reducing the injection molding efficiency.

[0026] Reference Figure 1 、 Figure 2 And Figure 3 As shown, the rotating part 2120 includes: a first gear 2121, an internal gear 2122 and a second gear 2123. The driving part 2110 is used to drive the first gear 2121 to rotate. The first gear 2121 meshes with the internal gear 2122, and a second gear 2123 corresponding to the first gear 2121 is meshed inside the internal gear 2122.

[0027] During the injection molding process, the driving part 2110 drives the first gear 2121 to rotate. Subsequently, the first gear 2121 drives the internal gear 2122 to rotate through meshing, so that the internal gear 2122 drives the second gear 2123 to rotate. Subsequently, the rotation directions of the first gear 2121 and the second gear 2123 are the same.

[0028] Reference Figure 1 、 Figure 2 And Figure 3 As shown, the screw part 2130 includes: a first screw 2131 and a second screw 2132. One end of the first screw 2131 is fixedly connected to the first gear 2121. A fixing plate 2133 is fixedly connected to the side of the first screw 2131. The side of the fixing plate 2133 is fixedly connected to the second screw 2132. The first screw 2131 and the second screw 2132 are arranged in the barrel 2134.

[0029] During the injection molding process, the first gear 2121 drives the first screw 2131 to rotate on one side of the fixing plate 2133, and at the same time, the second gear 2123 drives the second screw 2132 to rotate.

[0030] Reference Figure 1 And Figure 2As shown, the driving unit 2110 includes: a driving motor 2111 and a rotating rod 2112, the driving motor 2111 is fixedly connected to the top of the injection molding table 1, the output end of the driving motor 2111 is fixedly connected to the rotating rod 2112, and the bottom end of the rotating rod 2112 is fixedly connected to the first gear 2121.

[0031] During the molding process, the driving motor 2111 is started, so that the driving motor 2111 drives the rotating rod 2112 to rotate.

[0032] refer to Figure 1 and Figure 2 As shown, the airbag portion 3110 includes: a first airbag 3111 and a second airbag 3112 , the first airbag 3111 is fixedly connected to the side of the adjustment component 320 , and the second airbag 3112 is arranged on the side of the first airbag 3111 .

[0033] After the molding, the first airbag 3111 and the second airbag 3112 are inflated by injecting gas into the adsorption portion 3120, so that the first airbag 3111 and the second airbag 3112 begin to expand.

[0034] refer to Figure 1 and Figure 2 As shown, the adsorption part 3120 includes: a vacuum suction cup 3121, an air suction pipe 3122, an air cylinder 3123 and a piston rod 3124. The vacuum suction cup 3121 is fixedly connected to the bottom end of the adjustment component 320, one end of the vacuum suction cup 3121 is fixedly connected to the air suction pipe 3122, the end of the air suction pipe 3122 is fixedly connected to the air cylinder 3123, and the piston rod 3124 is slidably connected inside the air cylinder 3123; the adsorption part 3120 includes a vacuum suction cup 3121, an air suction pipe 3122, an air cylinder 3123 and a piston rod 3124. This structure can effectively control the flow of gas, thereby achieving a precise demoulding process. After the injection molding is completed, the vacuum suction cup 3121 of the adsorption part 3120 sucks out the air in the mold through the air suction pipe 3122, so that the airbag part 3110 can be quickly inflated, pushing the light guide plate to be evenly separated from the mold. This technical effect significantly improves the accuracy and efficiency of demolding, while reducing the stress concentration problem caused by traditional mechanical demolding. In addition, the inflation action of the airbag part 3110 is closely coordinated with the suction process of the adsorption part 3120, ensuring that during the expansion of the airbag, the light guide plate can remain stable and be separated from the mold without damage. Compared with traditional demolding methods, the present invention provides a smoother and more efficient method, which significantly improves production efficiency and the surface quality of the light guide plate, and avoids mold damage and unnecessary material waste.

[0035] After molding, the adjusting component 320 is activated, causing the adjusting component 320 to drive the piston rod 3124 to extend out of the air cylinder 3123. The piston rod 3124 adsorbs the air in the adjusting component 320 into the air cylinder 3123 through the vacuum suction cup 3121, so that the inside of the adjusting component 320 is in a vacuum state. Subsequently, the air in the air cylinder 3123 flows into the first airbag 3111 and the second airbag 3112 through the pipeline, causing the first airbag 3111 and the second airbag 3112 to start expanding, and thus the light guide plate in the adjusting component 320 begins to separate.

[0036] Reference Figure 1 、 Figure 2 And Figure 4 As shown in the figure, the feeding component 220 includes: a hopper 221, a material conveying box 222 and a heating coil 223. The material conveying box 222 is fixedly connected to the top of the injection molding table 1. The top of the material conveying box 222 is fixedly connected to the hopper 221, and the heating coil 223 is fixedly connected inside the hopper 221.

[0037] When performing injection molding, first put the PMMA material with high light transmittance into the hopper 221. Since the external power switch controls the heating coil 223, the external power switch is turned on to energize the heating coil 223. Subsequently, the heating coil 223 starts to heat the hopper 221 to remove most of the moisture, so that the PMMA material with high light transmittance is dried. Then, the one-way valve (not shown in the figure) below the hopper 221 is opened, and the dried PMMA material with high light transmittance in the hopper 221 flows into the material conveying box 222 for the next step of conveying.

[0038] Reference Figure 1 And Figure 2As shown in the figure, the adjustment component 320 includes a telescopic cylinder 321 and an injection mold 323. The telescopic cylinder 321 is fixedly connected to one end of the injection table 1, and the telescopic end of the telescopic cylinder 321 is fixedly connected to the injection mold 323. A vacuum adsorption hole 322 is opened at the bottom end of the injection mold 323, and the vacuum adsorption hole 322 corresponds to the vacuum chuck 3121; the feeding component 220 includes a hopper 221, a material conveying box 222 and a heating coil 223. The hopper 221 can store and evenly supply PMMA materials with high light transmittance to ensure sufficient and continuous supply of materials during the injection molding process. At the same time, the setting of the material conveying box 222 effectively guides the conveying of materials, avoiding the problem of unstable molding caused by uneven material flow in the traditional system. The design of the heating coil 223 is particularly important. By precisely controlling the temperature, it ensures that the PMMA material reaches an ideal dry state before entering the injection mold 323, thereby avoiding material defects or molding defects caused by excessive moisture content. This technical effect not only effectively improves the production efficiency, but also ensures excellent optical properties and surface quality of the light guide plate during the molding process, avoiding molding problems caused by uneven materials or unstable temperatures, and greatly enhancing the reliability of the injection molding process.

[0039] During the plastic molding process, the telescopic cylinder 321 is started, and the telescopic cylinder 321 controls the closing and opening of the injection mold 323 through telescoping, so as to carry out plastic molding and take out the light guide plate. After the vacuum chuck 3121 adsorbs the internal air through the vacuum adsorption hole 322, the vacuum chuck 3121 firmly adsorbs the injection mold 323. When the light guide plate is initially separated, the first airbag 3111 and the second airbag 3112 are gradually pressurized and bulged, so that the light guide plate floats evenly, avoiding local stress concentration and facilitating taking out.

[0040] Working principle: Before injection molding, the injection table 1, the driving part 2110, the screw part 2130, the feeding component 220, the vacuum chuck 3121, the vacuum adsorption hole 322, the air suction pipe 3122, the airbag part 3110 and the adjustment component 320 are in the initial state, and the first gear 2121 meshes with the internal gear 2122; the internal gear 2122 meshes with the second gear 2123, and the piston rod 3124 is slidably connected to the air cylinder 3123.

[0041] During the injection molding process, first place the PMMA material with high light transmittance into the hopper 221. Since the external power switch controls the heating coil 223, turn on the external power switch to energize the heating coil 223. Subsequently, the heating coil 223 starts to heat the inside of the hopper 221 to remove most of the moisture, thereby drying the PMMA material with high light transmittance. Then, open the one-way valve (not shown in the figure) below the hopper 221 to allow the dried PMMA material with high light transmittance in the hopper 221 to flow into the material conveying box 222 for the next step of conveying. Subsequently, start the drive motor 2111 to drive the rotating rod 2112 to rotate. The rotating rod 2112 drives the first gear 2121 to rotate. Subsequently, the first gear 2121 drives the internal gear 2122 to rotate through meshing, causing the internal gear 2122 to drive the second gear 2123 to rotate. Consequently, the first gear 2121 and the second gear 2123 rotate in the same direction, so the first gear 2121 and the second gear 2123 respectively drive the first screw rod 2131 and the second screw rod 2132 to rotate at both ends of the fixed plate 2133. At the same time, start the telescopic cylinder 321 to make the telescopic cylinder 321 tightly close the injection mold 323 by extending.

[0042] During injection molding, the first gear 2121 and the second gear 2123 respectively drive the first screw rod 2131 and the second screw rod 2132 to rotate in the barrel 2134 to rotate and inject the PMMA material with high light transmittance in the material conveying box 222 into the injection mold 323 for injection molding.

[0043] After injection molding, start the telescopic cylinder 321 to make the telescopic cylinder 321 start to retract and slowly open the injection mold 323. At the same time, the telescopic cylinder 321 drives the piston rod 3124 to extend out of the air cylinder 3123, so that the piston rod 3124 adsorbs the air in the adjustment component 320 into the air cylinder 3123 through the vacuum suction cup 3121, thereby making the adjustment component 320 in a vacuum state. Subsequently, the air in the air cylinder 3123 flows into the first airbag 3111 and the second airbag 3112 through the pipeline, causing the first airbag 3111 and the second airbag 3112 to start to expand, so that the light guide plate in the adjustment component 320 starts to separate. When the light guide plate is initially separated, the airbag gradually increases in pressure and bulges, making the light guide plate float evenly, avoiding local stress concentration and facilitating removal.

[0044] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light guide material injection molding device, characterized in that: include: Injection molding table (1), feeding assembly (2) and pressure relief assembly (3); The material feeding component (2) comprises a material conveying component (210) arranged at the top of the injection molding table (1), and a material supply component (220) is arranged above the material conveying component (210); The pressure relief assembly (3) comprises a support assembly (310) fixedly connected to one side of the material conveying assembly (210), and an adjustment assembly (320) fixedly connected to the bottom end of the support assembly (310); The material feeding assembly (210) comprises: a driving part (2110), a rotating part (2120) and a screw part (2130); the driving part (2110) is fixedly connected to the top of the injection molding table (1); the driving part (2110) is fixedly connected to the rotating part (2120); and the rotating part (2120) is fixedly connected to the screw part (2130); The support component (310) comprises an airbag portion (3110) and an adsorption portion (3120), wherein the airbag portion (3110) is arranged at the bottom end of the adjustment component (320), and the top end of the airbag portion (3110) is fixedly connected to the adsorption portion (3120).

2. A light guide material injection molding device according to claim 1, characterized in that: The rotating part (2120) comprises: a first gear (2121), an internal gear (2122) and a second gear (2123); the driving part (2110) is used to drive the first gear (2121) to rotate; the first gear (2121) is meshed with the internal gear (2122); and a second gear (2123) corresponding to the first gear (2121) is meshed inside the internal gear (2122).

3. A light guide material injection molding device according to claim 2, characterized in that: The screw portion (2130) comprises: a first screw (2131) and a second screw (2132); one end of the first screw (2131) is fixedly connected to the first gear (2121); a fixing plate (2133) is fixedly connected to the side of the first screw (2131); a side of the fixing plate (2133) is fixedly connected to the second screw (2132); and the first screw (2131) and the second screw (2132) are arranged in a barrel (2134).

4. The light guide material injection molding device according to claim 3, characterized in that: The driving unit (2110) comprises: a driving motor (2111) and a rotating rod (2112); the driving motor (2111) is fixedly connected to the top of the injection molding table (1); the output end of the driving motor (2111) is fixedly connected to the rotating rod (2112); and the bottom end of the rotating rod (2112) is fixedly connected to the first gear (2121).

5. The light guide material injection molding device according to claim 4, characterized in that: The airbag portion (3110) comprises: a first airbag (3111) and a second airbag (3112); the first airbag (3111) is fixedly connected to a side surface of the adjustment component (320); and the second airbag (3112) is arranged on the side surface of the first airbag (3111).

6. The light guide material injection molding device according to claim 1, characterized in that: The adsorption portion (3120) comprises: a vacuum suction cup (3121), an air suction pipe (3122), an air cylinder (3123) and a piston rod (3124); the vacuum suction cup (3121) is fixedly connected to the bottom end of the adjustment component (320); one end of the vacuum suction cup (3121) is fixedly connected to the air suction pipe (3122); the end of the air suction pipe (3122) is fixedly connected to the air cylinder (3123); and the piston rod (3124) is slidably connected inside the air cylinder (3123).

7. The light guide material injection molding device according to claim 6, characterized in that: The material feeding assembly (220) comprises: a hopper (221), a feed box (222) and a heating coil (223); the feed box (222) is fixedly connected to the top of the injection molding table (1); the top of the feed box (222) is fixedly connected to the hopper (221); and the interior of the hopper (221) is fixedly connected with a heating coil (223).

8. The light guide material injection molding device according to claim 7, characterized in that: The adjustment component (320) comprises: a telescopic cylinder (321) and an injection mold (323); the telescopic cylinder (321) is fixedly connected to one end of the injection molding table (1); the telescopic end of the telescopic cylinder (321) is fixedly connected to the injection mold (323); a vacuum adsorption hole (322) is provided at the bottom end of the injection mold (323); the vacuum adsorption hole (322) corresponds to the vacuum suction cup (3121).

9. A method for injection molding a light-guiding material, characterized in that: The light guide material injection molding device according to any one of claims 1 to 8 comprises: S1, placing PMMA material with high light transmittance into a feeding component (220) of a feeding component (2) for heating and drying; S2, starting the driving part (2110) of the feeding component (210), so that the driving part (2110) drives the screw part (2130) to rotate through the rotating part (2120) to feed and inject the material into the adjusting component (320); S3, simultaneously starting the telescopic cylinder (321), so that the telescopic cylinder (321) pushes the injection mold (323) to close and perform molding; S4, after the light guide plate is injection molded, the telescopic cylinder (321) is closed and retracted to drive the injection mold (323) to open; S5. When the telescopic cylinder (321) retracts, the telescopic cylinder (321) drives the support assembly (310) and drives the adsorption portion (3120) to suck out the air in the injection mold (323) and inject it into the airbag portion (3110); S6. The airbag portion (3110) swells up to flexibly support the light guide plate to be detached, and the light guide plate is taken out from the injection mold (323).

10. A light guide plate made of light guide material, characterized in that: The method is injection molded by the light guide material injection molding device according to any one of claims 1 to 8.

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